"Step-Up-Action" Rubber Band Gun.It has a nicked Ramp-Releaser.
http:oggcraft.jpengeng_gun.html
http:oggcraft.jpengeng_p308.html201306 Guide of building is Released. http:oggcraft.jpengeng_sale_info.html

Lots of planes just 'look cool'. This one really flies! Right side up, upside down, 360, the best acrobatics indoors and outside.
Flight video: http:youtu.beNGvtcJMzrgATry throwing upward at a 60 degree angle. READ THE ANNOTATIONS (they don't appear on iPhoneiPad) and follow the directions at the end -- add slight outwardinward angles when folding the wings and the winglets. Use 8.5x11" letter paper. If you use A4 paper, cut the end by 25 mm so that the paper is 210x272 mm.For additional help, see my old (Geocities) printable Sabertooth folding instructions at http:www.reocities.comchouhungsaber.html and flying instructions at http:www.reocities.comchouhungsabertips.htmlBy the way, I "re-invented" this in 1984, but internet comments date it back to at least 1946.